About the location (from here):
This midieval fortress has served as a residential castle for several families. Every family reconstructed the building partially, resulting in a well preserved overview of the transformations that the castle went through in history. Several rooms can be seen in their original Romanesque, Gothic, Renaissance and Baroque style. The interior is mostly still present. The castle is owned by the Stiftung Schloss Spiez (Spiez Castle Foundation) since 1929, that maintains the building and makes it available for temporary exhibitions and concerts. The garden and the 1000 year old castle church can be visited as well. The castle is beautifully situated at the base of the Spiezberg and along the lake. The castle can be reached by bus or a 15 minute walk from the railway station in Spiez. You can reach it by boat from Interlaken or Thun as well. In that case a five minute walk is required to get to the castle. You may visit the castle as a break while hiking from Faulensee to Spiez.

Movies shot at this location:
Lal Chuneriyawali from Jodi No. 1
Oh ThendralE from Endrendrum Kaadhal
Paddanandi Premalo from Student No.1
Ilaa Choodu song from Nee Sneham
Yaar Mere Yaara Mere song from Badal
Naa Pedavulu song from Ready
Guruvaram song from Dookudu